Scala example source code file (Compilers.scala)

This example Scala source code file (Compilers.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

ant, array, breaking, compiler, compilers, making, mb, null, settings, string

The Compilers.scala Scala example source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala Ant Tasks                      **
**    / __/ __// _ | / /  / _ |    (c) 2005-2013, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */


package scala.tools.ant.sabbus

import java.net.URL

object Compilers extends scala.collection.DefaultMap[String, Compiler] {

  val debug = false

  private val container = new scala.collection.mutable.HashMap[String, Compiler]

  def iterator = container.iterator

  def get(id: String) = container.get(id)

  override def size = container.size

  def make(id: String, classpath: Array[URL], settings: Settings): Compiler = {
    if (debug) println("Making compiler " + id)
    if (debug) println("  memory before: " + freeMemoryString)
    val comp = new Compiler(classpath, settings)
    container(id) = comp
    if (debug) println("  memory after: " + freeMemoryString)
    comp
  }

  def break(id: String): Null = {
    if (debug) println("Breaking compiler " + id)
    if (debug) println("  memory before: " + freeMemoryString)
    container -= id
    System.gc()
    if (debug) println("  memory after: " + freeMemoryString)
    null
  }

  private def freeMemoryString: String =
    (Runtime.getRuntime.freeMemory/1048576.0).formatted("%10.2f") + " MB"
}